Go's emphasis on backwards compatibility is one of its key strengths.
There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:
enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and

	// the file count modulo 65536 is incorrect.
	for {
		f := &File{zip: r, zipr: rdr}
		err = readDirectoryHeader(f, buf)
		if err == ErrFormat || err == io.ErrUnexpectedEOF {
			break
		}
		if err != nil {
			return err
		}
		f.headerOffset += r.baseOffset
		r.File = append(r.File, f)
	}
	if uint16(len(r.File)) != uint16(end.directoryRecords) { // only compare 16 bits here

                    }
                    break;
                }

                // walk up trying to find a match, do not go up to the root
                final int nextSep = link.lastIndexOf('\\');
                if (nextSep <= 0) {
                    if (log.isTraceEnabled()) {
                        log.trace("Not found " + link);
                    }
                    break;
                }

        try {
            while (scrollId != null) {
                final SearchHits searchHits = response.getHits();
                if (searchHits.getHits().length == 0) {
                    break;
                }

                for (final SearchHit searchHit : searchHits) {
                    final Map<String, Object> source = searchHit.getSourceAsMap();

# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#

eval "set -- $(
        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
        xargs -n1 |

            byte[] buffer = new byte[1024];

            while (!inflater.finished()) {
                int decompressedSize = inflater.inflate(buffer);
                if (decompressedSize == 0) {
                    break;
                }
                baos.write(buffer, 0, decompressedSize);
            }

            inflater.end();
            return baos.toByteArray();
        } catch (Exception e) {

        try {
            MessageDigest digest;
            switch (hashAlgorithm) {
            case HASH_ALGO_SHA512:
                digest = MessageDigest.getInstance("SHA-512");
                break;
            default:
                throw new CIFSException("Unsupported hash algorithm: " + hashAlgorithm);
            }

            // SMB 3.1.1 spec: Hash = Hash(PreviousHash || Message)

					v = mime.BEncoding.Encode("UTF-8", v)
				} else {
					v = mime.QEncoding.Encode("UTF-8", v)
				}
			}
			w.Header()[strings.ToLower(k)] = []string{v}
			isSet = true
			break
		}

		if !isSet {
			w.Header().Set(k, v)
		}
	}

	var start, rangeLen int64
	totalObjectSize, err := objInfo.GetActualSize()
	if err != nil {
		return err
	}

	tgtSha256 := sha256.New()

	for {
		srcSha256.Reset()
		tgtSha256.Reset()

		srcEOF = !srcOk
		tgtEOF = !tgtOk

		// No objects from source AND target: Finish
		if srcEOF && tgtEOF {
			break
		}

		if !srcEOF && srcCtnt.Err != nil {
			log.Fatal(srcCtnt.Err)
		}

		if !tgtEOF && tgtCtnt.Err != nil {
			log.Fatal(tgtCtnt.Err)
		}

          continue;
        }
        if (q == j + 1) {
          if (j == 0) {
            break;
          }
          s++;
          switchDirection();
          continue;
        }

        Collections.swap(list, j - c[j] + s, j - q + s);
        c[j] = q;
        break;
      }
    }

    void switchDirection() {
      o[j] = -o[j];
      j--;
    }
  }